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Finding the Third Proportional to 877.79 and 1,816.45

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Solution

The third proportional to 877.79 and 1,816.45 is: 3,758.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    877.79 : 1,816.45 = 1,816.45 : x
  2. Step 2: Convert to fraction form
    877.79/1,816.45 = 1,816.45/x
  3. Step 3: Cross multiply
    877.79x = 1,816.45 × 1,816.45
  4. Step 4: Simplify right side
    877.79x = 3,299,485.99
  5. Step 5: Solve for x
    x = 3,299,485.99/877.79
  6. Step 6: Final answer
    x = 3,758.86

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.